Internal-combustion engine.



W. WGGDWAHDi mTERNAL' COMBUSHON ENGINE APPLICATION FILED MAE, 1,19, 19M.

atented June 8s 191.*5

WJWOODWARD.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILED III/m19. Ism.

M2974, I IOIIIGDIQIIJIIII@ s919151 2 SHEETS-SHEET 2- rimessi...

To all iii/m izv may coower'n Beit known that l Vl/ILMAM l/Voonwfinn a. citizen of the United. Sbeteeend e 'resident of the city of Chicago, county of'Cook, and

rSttte oi Illinois, have invented certain new and useful improvements in lnterneLConi.- ousti'on Engines, of which the folles/'ing is n speoicniignfi.4 l.

' "My invention relates to improvements in internalcombustionengines, and hes for its object the provision of en improved' engine of this character provided. with en improved ralve and valve operating' arrangement which is ci simple and economical .construction and highly efficient in use.

The in'veuion consiss in ehe comhinaf tions and arrangements of parts hereinnfiter described and claimed.

' The invention will be best understood hy construction. Y'

reference to vthev miconipanying drmvings Y i'orining :i port of this speeilcetlon, and in g which,

'Figure 1 is esectionzrl lView teken through the crank euse of un engine embodying my ii'ivemion,` showing ehe Cylinder partially in section, Fig. "2, @section teken on line 2-2 oit Fig. l, Fig; 3, n section teken onhe fplnneindicnted by. the lines SW3 o Figs, l. end 2, l'igq, :in enlnrged section when on. line 244 of 'Fig 3, and/Eig. 5, e perepeetive "View of @neef *che valves employ/edili 7 'The preierree form of consi'arucLion. es illustrated in the drawings comprisee e crank cese 6 which mnywbeof usual er A' cylinder 7 is se@ cured to crank-case 6 in. any usuel erl desired uinru'ic and is provided with intake and. ex'- lmust ports 8 and 9ares1oec ,ively Cylinder 7 .is provided with zr cylinder head l0 having y .n spark plug 11 therein. The pors 8 :und 9 :we .erranged diametricelly'.drong 'eac i other and longitudinal ribs or bosses l2 ere er.-

rangedcn the exterior Well of cylinder'-7 diametricelly ,opposite each other :in'd'in 'e' #piene at right' angles co the dimnetric piene corresponding to. portsend 9;, Esch of 'thehosses l2 is' proYidedwith n. longitudinal passage 13 having'nnleterel extension le se.

v ASpeeicazion ef Leiters "feinem,

its upper end communicating with she upper portion of cylinder 7. A valve operating stein l5 i'sfslidebly sind rotaably mounted in each of he passages 13 and is provided at iis upper end with en inwardly Aextending angular arm 16 projeeing into cylinder l and loosely engaging n socket 17 in e boss 18 Jformed,- on the inner upper central portion of av'zilgife-shoe 19, as indicated. Each of the mlveshoes 3.9A is ground to El: nicely the portion of the interior Well of cylinder 7 inimediaiely su'rrmindiiy.if` ,he corresponding pores Send 9, and each of said valves is prolieieneel June 5S, lll,

Apgiiemidn mee eieren is, lele. serle; in. 625,770.

vided with a pori; 20 adapted to register' f i withy the'corres'ponding ports 8 and 9 essaid l l.,

mire is reciprocnted on the inner Wall of cylinder 'l'. observed that yeach of the valves 19 is entirely free to seek its seat Lagainst the interior Well of onylinder 7 and at the jLinie of compression or expansion in said cylinder will be held `tightly to its seat by the pressure in the cylinder thus effecting e tight seal 'when :i tight seal is essenliel. Ai; its lower end each ofthe .passages 13 is Venlarged and a pecking 21 is arranged in the upper portion of each oi seid enler i head 22 Ais loosely mount-ed on eac el? the stems 15 in the corresponding passage enlargement, mid' is provided Wiih e lug or feather 23' sliding in e groove 24C formed the Wall. of the corresponding enlargement,

thnseecting L splined conneetion heibs'veen seid vheed sind seid enlarged passager, dr en By this. errengerneni it will be truding end of each. of the steine 15 and has iis uppergenfd secured to. the corresponding heed'end its loweren'd secured ifo another heed which. is-fmed to filme lewer end of seid siem. Before the'pnrtsare assembled,

inorsieuel igension is placed in eachl of '.the springs B5 by rcte'tingvlie corresponding heeds 22 endreleively tese/ch other-,and

-inf've c lireclionv to 1canse .'s'uch isorsionei tension to tend holdthe 'correspondingyalve .19 yielding'ly toi-ips 'seee'geins the inner Well By this arrangement all that is necessary to do in order to reniove Yalves 19 l or regrinding or other i'epairs, is to remove cylindei head l0 and then turn arins lli outwardly against the. resistance of springs Q5 which will release the valves and permit their removal. This constitutes asimple and eiiieient means for holding the valves in position and for controlling the same.

Each of the heads 26 is normally held in contact with an arin 27 of a correspondingr bell crank lever, the other arm 28 of which runs upon the periphery of a corresponding cani Qixed to lthe cam shaft 8() of the engine, the' engine illust ated being of the four-cycle type. Each of the cams Q9 is provided with an outer peripheral cylindrical land 3l, 'of comparatively great extent occupying nearly 180 degrees of the periphery, and an inner land 32 occupying a comparatively small portion of the periphery of the cam, the remaining portions of the periphery of said cain being composed of surfaces connecting -said lands. This constitutes a simple andelicient forni of cani for the pur-- pose vand one which operates at high speed without noise.

The cam shaft 30 is driven from crank shaft 33 Which is mounted in crank case 6 in any usual or desired manner. Crankshaft 30 is Cprovided With the usual crank 34 connecte by ineans of a connecting rod 35 with the usual piston 36 operating in cylin- 1 l l ner i'.

While l: have illustrated and described the.

preferred forni of construction for carrying my invention into eii'ect, this is capable of variation and modification without departing from the spirit of the invention. I, therefore., do not Wish to be limited to the `@precise details of construction set forth, but

desire to 'avail myself o'f such variations and modifications as come wit-hin the scope of the appended claims.

Having described my. invention .what

claim as new and desire to secure by Letters Patent is:

1.,An internal combustion engine coniprisinpz a cylinder having inlet and exhaust ports in the walls thereof; separate inlet and exhaust valves sliding against the inner walls of said cylinder for controlling said portsgysprings arranged to press said valves to their seats; and means for operating said valves, substantially as described. i Z..An internalv combustion engine 'coniprising a cylinder having a port and a passage in the walls thereof: a valve in said cylinder for controlling said port; a slidable 4and rotatable stem provided willi an arm extending through said passage into said "cylinder and operatively engaging said valve; a spring arranged to tend to rotate ort' a stem rotatable and slidable in said passageand provided with an arm project ing'into said cylinder and operatively en.- gaging said valve; a spring arranged to tend to rotate said stein to press said valve toits seat; and nieansfor reciprocating said stein to operate Said valve, substantially as described.

- si. Aii'iiiternal coiiibiistion engine comprising a cylinder liavingpports in the Walls thereof and longitudinal passages communieating at one end with in said cylinder for controlling said ports; stems rotatable and slidablc in said passages valves; springs arranged to tend to rotate said stems to press'said valves to their seats; and means forreciprocatingsaid stems to operate said valves, substantially as vde-v scribed. y

5. An internal "combustion engine comprising a cylinder having aaport inthe wall I thereof and a longitudinal passage communicatingl passage and dprovided with an arm projecting'into sai cylinder and operatively engaging said valve; a spring arranged to tend' l' i to rotate said stem to press' said valve to 'its seat; means for reciprocating said stem to opera said valve; and a packing arranged to seal said passage :against leakage, substantially as described.

6. An internal combustion engine comprising a cylinder having ports in the walls thereof and longitudinal passages coinnninisie` said cylinder; valves V.and Vprovided with arms projecting into said" l cylinder and operatively engaging 'i said.

at one end with said cylinder; a y valve in said cylinder' for controlling said port; a stemrotatable and slidable in`l said A 10U j '7. Aninternalcombiistionengineeoinprising a cylinder havinga port in the wall thereof and a longitudinal passage eonnnaniratingr at one end with said cylinder; a valve in said cylinder for controlling said port; a stein rotatable and slidabie in said passage and provided with an arm projecting into i eating at one end with said cylinder; valves 3m prising (z3/liscia? iis.

, ope'aiis Said wives, subsantiaiiy as piuma@ a cyiiiidei having a port in the wall on Smc iheleo and :i ifmgiudiai passage commuaiid iiazici; ifi ixed if said micizing it mi@ @mi wih said ayiincier; a

stem and Secura-. he nher ii said cyiiiifiei' foi' contioliing said spring; @mi i a smtatale. und siidabie in said stem. ibo @peija saisi. v;; xpmfiefd wigii :m arm progfctl@ riesciiiifd. y ing into said cyiirideir and. opei'aiveiyA eii- '55. im ir mi winks; head iacsy momfid on sif semimd spiied iii said passage; s psc/king impi'isoned in said, p ssage, by

dal sommw mah. sind Qyiisliel; sa. head; a heiai spring im said fsiem han @mating ai; @n e Ui im' c@ @winzig i 111g maiz-md sscn'r'ed. it@ said iieaci; a narici @fuis sms ioibuizziiii-e and. s ilsibe iii ssl fixed in said siem and. secure/ to che nher cylinder m61 npei'mlvsiy @ating Said siem E0 @payants Said miva, silb- 2@ sami si'feixis and. spiinef in said gms-sages; 1Q. im internal combustion engine com packing@imprisone in suini passages by pi'isiiig a cyiindei' hmiiig perils :in the wail heads; helical spri igs on 4sai 3.16m@ having thereof and iongitufm passages commw im@ @mi Secmifi tothe coirfespoiing hear-i; nicating one en@ with mici cylinder; si iisid fixed to @adi 0f said. siga-m?, and. wives in said cylinder far ntroiiing siii@ 25 mired to the @thai end naif the c-Giespndigiigg' ports; stains lntaabie and siiabie. in sai@ sprii'ig; v and means foi i'ecipmcriinxgf; said passages and providedwith firms piojeciig swims; a0 operate Vanves, Siibstmifaiiy into said Cylinder' and opeiativeiyengaging as described. said valves; heads iossey mom-atari ou said 9 An inei'mi cmgiiiistioi wm" 'shams and spiined in saici ses; paciiws cm'mmiiieliaai spiings mi said. sems 'havin i @im en@ .u if-br; 2i secured to iii@ corresponding iis-af); n. head wing' pw?, :iiiiMeifl to @zich of said Stews and secured si said CyL ih@ @they and of die Cmespmldig; spring; siaiaaie and mams im' recipmci'wing saif stems to @Emirate said?. wives, siiisiitaiijf 51S Ziehereo mici :i` ongitiidiiiai p. nicaing at @im @mi with s im saifi @yi im? h ci i1 'wr port; sisi-im mi ci pas: s mi@ p u in f lumai-ting o e 'anni wii sam cviinaei, a,

head.; a helical sp'iiii t 'I ve im sani yimdef having :i vom ai iged to Yagi-ster with and @animi i/im ind@ pori; fi stem i'ozgia'ble am! sidzibie iii passage simi provide@ Wii an zum pm jsizziiifg; .inw said Cy'iiiifisi and opamiveiy' engaging saisi valve; a head ioosey minimali im sni siem air spiine ,iii said passage; a

@V3i wives head; si helical spying on saisi stem. having f i :er :inw t i1@ ons @mi sscme fano head; n hem iiasii iep/fist@ with sind u 'ko .aif fiiiiiisemmai to other pars; Ssms rotatable siiiibis of said spring; fmfi im @sin foi i'fciproantiig passages and 'amifed" 'iviuiii s s'ilm operai@ 'said Vain/Ta? Substantially im into said. cffiinfisi miv/ii 01,'veili s as scribe,

Said miff; iwfri OOSY wllml Fin intel-nai cmabnsiioi engins com@ stems and spiinei'i iii simi pasas Q25; 'p @rising cylinder iifving" pois; in the W211i ings img'iiisomc in said pass tfiei'er/*i mici iqngit .si @ass-Mes @mmm imziiif-s inelimi springs o .szi'irl s 'th s mi iicyiinde'; su mw wifi seein-Qd to this mrmspmi having Goris mi :i hmu'l iixd m midis of wifi imma? i wifi con'ioi cjf`icured to the mtimfmd mi the oespoi' spring; :imi "1mm fm msi'pijiz".iin@

aus s .L l s iig; :L peri m, tim imi), imprisoned m said passages sami. hezuis;

packing ii'nprismid in said passage sizii sponding spring;

1, man@ linder and 'operatively y mnunt* said pasassages @.1 sp1-ings on Sad stems corresponding of said shams of` the correand Cams for racprcca'n 'szuntaly as described.

ing/said Sems $0 opemte said yalves, sub 1Q In tsmony'vgheref hav name to this Speclcanon 1n h two subscmbmg Wltnesses.

WILMAM WQQDWARD/ Winesses e signed my e presence 'of l 

